What options are available for extending a Non-O visa stay in Thailand for a short visit?

Mar Ta it is a confused reply which I would like to remove if I was the admin. Your Mom does not wish to apply for a 1-year extension of the stay permit on Immigration, so there is no need to visit Immigration for anything. She wants to add a few weeks stay, and this can only be done by a border run

Mar Ta she must be willing to stay in Malaysia for a few nights, before she heads back to Thailand, if she does it on her own. For Malaysia she needs to fill out the online MDAC, and returning to Thailand she needs to fill out the online TDAC, again. Otherwise no problem, she will get stamped in for 60 days stay permit upon a visa-exemption at a land border. I suggest using Sadao instead of Pedang Besar

Mar Ta We can't answer that, but it depends on the officer because there's a high chance they'll refuse.

Mar Ta A "visa" permits and regulates the ENTRY into the country.

Depending on the visa category or “visa class”, you will receive different lengths of stay permits. For Thailand, these can be 15, 30, 60, 90, or 180 days. They can also be one year or 5 years.

The STAY PERMIT regulates STAYING in the country.

The duration of the permitted stay depends on the visa category with which you entered.

A single-entry visa becomes invalid upon entry and cannot be extended or used for another entry.

You have entered the country “on a visa” and you are now inside the country on a stay permit. This is also evident from the entry stamp:

This stamp states "admitted until" and a date. This stamp is the actual stay permit. This stamp is not a visa. The entry date is in red, and the expiration date of the "admitted until" permit is in blue.

In the upper right corner, next to the wording “visa class”, the visa category under which you entered the country is either handwritten or stamped.

If you leave the country before the expiration of your stay permit without a re-entry permit, the visa itself does not expire (because you no longer have any visa) it is just the stay permit that will expire.

Mar Ta in case the 90-days stay permit she received when she entered Thailand on the 90-days Non-Imm-O Visa, is actually and factually up on January 29, she has the option to drive or fly into a neighbour country, stay a few nights and then re-enter Thailand visa-exempt. She will get stamped in for 60 days, regardless if she enters via air or by a land border. Her return ticket is the perfect proof of onward travel, should she be asked for it by the airline or at the border. She however must fill out a new TDAC, again, befor entering Thailand

Mar Ta are you confusing the expiry date of the visa (the "visa validity" which is the date after the wording "visa must be used by") with the expiry of the admitted stay, which is the date on the entry stamp, in blue colour ? On a Non-Imm-O visa, you will get stamped in for a duration of 90 days. The VISA will become used or invalid when you enter. . .I think you must be confusing these two dates . . according to you, she has entered Thailand on October 30, 2025 . . did she?

Mar Ta Visa allowed entry and the arrival stamp says when must leave

Mar Ta when does the stamp expire ?

The visa expired the day your mom arrived

@Mar ***

I've never been to the southern border, but I believe if you want to leave and return same day with visa exempt, you'll have to pay a "fee" of around 2000 baht at most southern borders.

@Mar ***

It's definitely pulling from very old information then. Visa exempt entry is visa exempt entry, regardless of where they enter. It will be a 60-day entry stamp via land, air and sea entry.

Mar Ta border bounce for a new 60 day stamp